Count groups of ten and extra ones
I can count more efficiently by grouping objects into tens and then counting the groups of tens and extra ones.
Count groups of ten and extra ones
I can count more efficiently by grouping objects into tens and then counting the groups of tens and extra ones.
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Lesson details
Key learning points
- Ten ones are equivalent to one ten.
- When counting larger groups, it is more efficient to group objects into tens, then count the tens and extra ones.
- We can work out how many there are by counting in ones, or by counting the groups of ten and extra ones.
Keywords
Digit - A single symbol used to make a numeral.
Common misconception
Children may only think of 'ones' in terms of the extra ones after the tens have been grouped, so may fail to see 45, for example, as 45 ones as well as 4 tens and 5 ones.
When objects are grouped in tens, use deliberate errors and discussion to draw attention to the total number of ones represented by the number, so children are familiar with recognising both the extra ones and the total number of ones in a number.
To help you plan your year 2 maths lesson on: Count groups of ten and extra ones, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Count groups of ten and extra ones, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Explore more key stage 1 maths lessons from the Counting and representing the numbers 20 to 99 unit, dive into the full primary maths curriculum, or learn more about lesson planning.
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Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Sort these numbers in the order you would say when counting forwards.
Q2.How many tens can you see in the picture?
Q3.Which of the following represents the number shown on the Gattegno chart.
Q4.Laura has 50 counters. She wants to record this on the place value chart. Which place value chart is correct?
Q5.How many tens are in the number thirty?
Q6.Match the numerals to the words that have the same value.
50
40
80
Assessment exit quiz
6 Questions
Q1.Look at the picture and fill in the missing number. There are 7 groups of ten and extra ones.
Q2.Which of the following shows ten?
Q3.Which Gattegno chart represents the groups of tens and ones shown?
Q4.Laura puts the pencils into groups of ten. She has 8 tens and 6 extra ones.
If they were counted in ones, how many ones would there be altogether?
Q5.Which place value chart represents the picture shown?
Q6.Match the words to the numerals that have the same value.
56
65
32
23